Router



NOV. 30, 1937. Q O m 2,100,566

ROUTER Filed Sept. 29, 1936 7 9:4 v INVENTOR:

Patented Nov. 30, 1937' UNITED STATES PATENT! OFFICE.

4 Claims.

This invention relates to and has for an object thereof, the provisionof a router or like woodworking machine wherein an elongated out such asa slot of predetermined dimension may be quickly and accurately formedin the work thru the medium of an efiicacious manually controlled andpower actuated means which effects such relative angular movementbetween the work and a rotary power operated cutting tool that said outwill be made inone continuous motor powered operation of the machinewithout requiring the exercise of any particular skill by the operatoror necessitating his attention except for an initial manual starting ofthe machine.

A further important object of the invention is to provide certain new,novel and useful improvements in woodworking machinery of the routertype, and embracing a woodworking tool of said character in which all ofthe operative parts are arranged compactly in a main supporting frame,with simple and improvedv driving or operating means, operatingsimultaneously in a vertical and horizontal manner or cutting direction.

Another characteristic of the invention is that the machine is providedwith propelling mechanism operating to automatically exert a bit forcingpressure thru the material worked upon simultaneously with the cuttingoperation.

Another characteristic of the invention is that the machine is providedwith propelling mechanism operating automatically to release both thebit forcing pressure and the bit cutting operation from contact with thematerial worked upon simultaneously with the completion of the cuttingof the material in a pre-determined manner.

A further characteristic of the invention, and an important objectthereof, is the provision of a woodworking router employing but onemotor for the dual operation of the dual propelling mechanism.

And a further object of this invention is the provision of areciprocating cutting mechanism making a clean out through theWoodstock, either from the edge thereof, or centrally disposed therein,the invention in the latter feature being of great value particularlywhen used in connection with the manufacture of Venetian blinds for thecutting of the elongated slots in the multiple number of slatscomprising said class of window shades.

I attain these objects by the router comprising my invention asdisclosed by the appended drawing in which Figure 1 is a plan of typicalcuts made by my router;

Figure 2 is an elevational view of my router, partly in section;

Figure 3 isan end view thereof partly in section;

Figure 4 is a section on the line (I-4 of Fig. 2, and

Figure 5 is a section on the line 55 of Fig. 4; i

Similar numerals indicate like parts throughout the several views, thewoodworkers routing tool herein disclosed comprising a frame Fsupporting a table top T for supporting the material M during operationof the tool. The top T carries a guide G and is provided with anelongated aperture I thru which a cutting tool 2 operates; the samebeing operatively supported in a chuck 3 suitably carried by a shaft 4of a, motor 5. A suction fan- 6 may be suitably secured to the shaft 4for drawing the waste material produced during the cutting operationaway fromthetool, and said material may bev readily disposedthru anaperture I of a flexible tube 8' securedat one end to the underside ofthe table top T, and at the other to a suitable closure 9 carried by thehousing of the motor 5. Said motor "is" secured by means of studs III toa slide plate H which is supported for a reciprocating movementhorizontally upon a guide plate I2 which is secured as by screws I3 to aslide plate I4- reciprocal vertically in a groove I5 formed in a bracketI 6 attached by studs IT to theframe F.

A slot I8 is formed in an offset end of the plate II to provide meansfor connecting one end of a connecting rod I9 to said plate as by meansof a bolt 20 which also serves as an attaching means for one end of arod 2I to said connecting rod I9, the other end of said rod 2| beingpivotally connected to a shelf 23 carried by the frame F.

A gear case 24 is suitably mounted upon the shelf 23, the reductiongears contained therein, but not shown being driven from a motor 25 bymeans of pulleys 26, 21, 28, and 29, belts 30 and. 3|,

and a shaft 32, said shaft being journaled in bearings 33 and 34 carriedby the frame F.

A crank arm 35 is carried and driven by the shaft 32 and is connected tothe plate I I by means of the connecting rod I9 and the stud 36.

A stud shaft 31 driven by the motor 25 thru the reduction gearing in thecase 24 has'keyed thereon a slide clutch member 38, the teeth 39 ofwhich are disposed to engage teeth 40 of a collar 4| formed on orsuitably attached to a crank arm 42 loosely mounted upon the outer endof the shaft 31.

A connecting rod 43 is attached at one end by means of a stud to thecrank arm 42, and the other end thereof is attached by means of a stud45 to the plate M. The clutch member 38 is shifted by means of a yoke 46secured to a rocker shaft 41 journaled in a bearing 48 which is suitablysecured to the shelf 23. v

A lever 49 is keyed to an outer end of the shaft 4! and is connected asby means of a link 50 to a treadle 5|. One end of the treadle ispivotably connected at 52 to the frame F and its other end is movablypositioned within a guideslot 53 formed by the suitable attachment of .aplate 54 to the frame F.

A spring 55 is provided having one end at-' tached to the lever 49 andthe other end attached to the bracket 16.

The relative position of the several component Darts as is hereindisclosed forms but one of a number of ways in which the same may asreadily be operatively installed, and in operation, the Woodstock to beworked upon is ordinarily manually held to the table top T for speedinoperation, but mayby suitable clamping 'means as readily bemechanically secured thereto.

With both the motors 5 and 25 in operation, the treadle 5! is depressedunder foot pressure, whereby the clutch member 38 is engaged with thecollar 4! by means of the intervening link 50,

the spring 55 operates to restore the clutch out of engagement ininoperative or free position as shown by Fig. 2.

The one-half revolution of the crank arm 42 just described drives thetool 2 upwardly thru the material M by reason of the motor 5 beinggradually raised or rather forced upwardly thru operation of theconnecting rod 43, stud 45, plate l4, screw l3, plate [2 and studs ID.Simultaneously with said upward movement of said motor 5, the cuttingbit ,or tool 2 is forced against the Woodstock material M or whatever beits character, and gradually therethru, the tool 2 being rapidly rotatedwhile in said upward movement by means of the motor shaft 4, andsimultaneously therewith, a further or third, or reciprocating movementof said tool is effected in the following manner. The shaft 32 drivenfrom the motor 25 rotates the crank arm 35 to effect a horizontalreciprocation of the plate I! by means of the stud 36, connecting rod I9 and stud 20, said operation in turn eifecting a horizontalreciprocation of the motor 5 by reason of its attachment to said plate.

By means of the suitable reduction gears within the case 24 the ratio ofrevolutions between the crank arm 35 and the crank arm 42 may beapproximately forty to one. It will therefore be understood that thereciprocation of the tool 2 within the slot I as seen in Fig. 1 is morerapid than the upward movement of said tool within said slot as seen inFig. 2, the operation of said tool thus producing an elongated slot 56within the .material, and this regardless whether the cutting process iscommenced at an edge of the stock or centrally disposed therein, asample of each of said cuts being shown in Fig. 1. It is also possibleto sever the stock from edge to edge should that be desirable ornecessary for the lack of a saw. I 7 As hereinbefore described, the pullof gravity upon the motor 5 and the respective parts connected thereto,acts to complete the last half of each revolution of the crank arm 42,wherefore it is necessary to exert pressure .upon the foot treadle T foreach separate cutting of an elon-' gated slot to be produced in thematerial M, for although the tool continues to simultaneously rotate andreciprocate, it nevertheless is caused to move or rise upwardly only atthe instigation of the operator by the depressing of said treadle.

The slot I8 is provided to permit the upward movement of the plate llsimultaneously with the reciprocating movement of said plate. The rod 2|is arranged to prevent an upward movement of theendof the connecting rodl9 carryextremely simple in construction, durable, positive inoperation, and assures an even clean out elongated slot, free from roughedges and burrs.

I am aware that slight modifications may from time to time be made inthe details of structure illustrated without departing, however, fromthe scope of the present invention, and as defined in the claims whichare appended hereto. Hence, I do not limit my present invention to theexact description of construction herein disclosed, but what I do claimis:-

1. In a machine of the character described, a frame, a work supportthereon, a rotary cutting tool, a motor for rotating said tool, andpower actuated means for moving said tool both horizontally andvertically against and relative to the the work supported on said worksupport, said means including a continuously operating means for movingthe tool' horizontally and means mannually controlled for effecting thevertical movement of the tool at will.

2. In a machine of the character described, a

frame, a work table having a slot therein, a rotary upright cutting toolmovable within and thru said slot for engagement with the work supportedrotary and horizontal movements, and a manually operable control meansoperable to initiate the starting of said vertical movement, said firstnamed means including a continuously operated device connected with saidsecond named motor, and said second named means including a manuallyoperable'means for establishing a drive connection with said last namedmotor. 7

3. In a machine of the character described, a frame, a work tablethereon having a tool receiving opening therein, a vertically reciprocalmember in said frame, a horizontally reciprocal carriage supported bysaid member, a rotary cutting tool supported by said carriage and beingextensible thru and movable in said table opening, a motor for rotatingsaid tool, another motor, a drive connection between the second motorand said carriage, a drive connection between said second named motorand said vertically movable member, and manually operable clutch meansfor controlling the last named drive connection for the operation ofsaid tool.

4. In a machine of the character described, a

reciprocating power driven tool simultaneously operating in a verticaland horizontal sequence to out an elongated portion in material broughtin contact therewith, means for driving said tool horizontally, andindependent means for driving the same vertically, operation of saidlast named

